in-group 
noun
An exclusive, typically small, group of people with a shared interest or identity: an in-group signal of ethnic identity special forms of speech are used in some kinds of in-group...
- This heightened awareness becomes personally relevant when one commits to identifying with the ethnic in-group.
- I think there's another side to it as well, seen from the other side of the fence: incoming slang is a sort of secret language, expressing exquisitely shaded meanings that are shared among the in-group but are baffling to outsiders.
- Such dialects, almost by definition, are media of intimacy: ‘mother tongues’ used in the family and in-groups.
- take against
- take a hammering
- take a hand
- take a hike
- take aim
- take a jerry to
- take a leaf out of someone's book
- take-all
- take a load off someone's mind
- take a lot of (or some) ——
- take a (or the) hint
- take a (or the) load off one's feet
- take-apart
- take a poke at someone
- take a poor view of
- take a powder
- take a rain check
- take a running jump
- take a shine to
- take a toss
- take a trip (or walk) down memory lane
- takeaway
- take away from
- take a wicket
- take a woman to wife